Design D0110DOW, D0120DOW, D0110GOW, D0120GOW are "out of wall or ground" integral sleeve dynamic curtain kind hearth dampers. Model D0110GOW and D0120GOW are suitable for provide or return ducts that terminate in a grille or register. Design D0110DOW and D0120DOW are made for as a result of penetrations (ductwork connected to https://heavy-duty-stainless-stee46890.onesmablog.com/the-definitive-guide-to-dampers-for-industrial-sector-77901481